Dynamics of bubbles under stochastic pressure forcing

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dc.contributor.authorVesipa, Riccardo
dc.contributor.authorPaissoni, Eleonora
dc.contributor.authorManes, Costantino
dc.contributor.authorRidolfi, Luca
dc.date.accessioned2021-03-16T14:08:26Z
dc.date.available2021-03-16T14:08:26Z
dc.date.issued2021-02-23
dc.description.abstractSeveral studies have investigated the dynamics of a single spherical bubble at rest under a nonstationary pressure forcing. However, attention has almost always been focused on periodic pressure oscillations, neglecting the case of stochastic forcing. This fact is quite surprising, as random pressure fluctuations are widespread in many applications involving bubbles (e.g., hydrodynamic cavitation in turbulent flows or bubble dynamics in acoustic cavitation), and noise, in general, is known to induce a variety of counterintuitive phenomena in nonlinear dynamical systems such as bubble oscillators. To shed light on this unexplored topic, here we study bubble dynamics as described by the Keller-Miksis equation, under a pressure forcing described by a Gaussian colored noise modeled as an Ornstein-Uhlenbeck process. Results indicate that, depending on noise intensity, bubbles display two peculiar behaviors: when intensity is low, the fluctuating pressure forcing mainly excites the free oscillations of the bubble, and the bubble's radius undergoes small amplitude oscillations with a rather regular periodicity. Differently, high noise intensity induces chaotic bubble dynamics, whereby nonlinear effects are exacerbated and the bubble behaves as an amplifier of the external random forcingen_UK
dc.identifier.citationVesipa R, Paissoni E, Manes C, Ridolfi L. (2021) Dynamics of bubbles under stochastic pressure forcing. Physical Review E, Volume 103, Issue 2, 2021, Article number 023108en_UK
dc.identifier.issn1539-3755
dc.identifier.urihttps://doi.org/10.1103/PhysRevE.103.023108
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16479
dc.language.isoenen_UK
dc.publisherAmerican Physical Societyen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectNonlinear dynamicsen_UK
dc.subjectDrops and Bubblesen_UK
dc.subjectCavitationen_UK
dc.titleDynamics of bubbles under stochastic pressure forcingen_UK
dc.typeArticleen_UK

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